Add option `-permitrbf` to set transaction replacement policy

Add a configuration option `-permitrbf` to set transaction replacement policy
for the mempool.

Enabling it will enable (opt-in) RBF, disabling it will refuse all
conflicting transactions.

Conflicts:
	src/init.cpp
	src/main.cpp
	src/main.h

Github-Pull: #7386
Rebased-From: b768108d9c
This commit is contained in:
Wladimir J. van der Laan 2016-01-21 11:11:01 +01:00
parent e25b158ab8
commit da83ecd454
No known key found for this signature in database
GPG Key ID: 74810B012346C9A6
3 changed files with 14 additions and 4 deletions

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@ -366,6 +366,7 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageOpt("-onion=<ip:port>", strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy"));
strUsage += HelpMessageOpt("-onlynet=<net>", _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)"));
strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), DEFAULT_PERMIT_BAREMULTISIG));
strUsage += HelpMessageOpt("-permitrbf", strprintf(_("Permit transaction replacement (default: %u)"), DEFAULT_PERMIT_REPLACEMENT));
strUsage += HelpMessageOpt("-peerbloomfilters", strprintf(_("Support filtering of blocks and transaction with bloom filters (default: %u)"), 1));
if (showDebug)
strUsage += HelpMessageOpt("-enforcenodebloom", strprintf("Enforce minimum protocol version to limit use of bloom filters (default: %u)", 0));
@ -1007,6 +1008,8 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
if (GetBoolArg("-peerbloomfilters", true))
nLocalServices |= NODE_BLOOM;
fPermitReplacement = GetBoolArg("-permitrbf", DEFAULT_PERMIT_REPLACEMENT);
// ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
// Initialize elliptic curve code

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@ -75,6 +75,7 @@ bool fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED;
size_t nCoinCacheUsage = 5000 * 300;
uint64_t nPruneTarget = 0;
bool fAlerts = DEFAULT_ALERTS;
bool fPermitReplacement = DEFAULT_PERMIT_REPLACEMENT;
/** Fees smaller than this (in satoshi) are considered zero fee (for relaying, mining and transaction creation) */
CFeeRate minRelayTxFee = CFeeRate(DEFAULT_MIN_RELAY_TX_FEE);
@ -865,12 +866,15 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState &state, const C
// unconfirmed ancestors anyway; doing otherwise is hopelessly
// insecure.
bool fReplacementOptOut = true;
BOOST_FOREACH(const CTxIn &txin, ptxConflicting->vin)
if (fPermitReplacement)
{
if (txin.nSequence < std::numeric_limits<unsigned int>::max()-1)
BOOST_FOREACH(const CTxIn &txin, ptxConflicting->vin)
{
fReplacementOptOut = false;
break;
if (txin.nSequence < std::numeric_limits<unsigned int>::max()-1)
{
fReplacementOptOut = false;
break;
}
}
}
if (fReplacementOptOut)

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@ -106,6 +106,8 @@ static const bool DEFAULT_TXINDEX = false;
static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100;
static const bool DEFAULT_TESTSAFEMODE = false;
/** Default for -permitrbf */
static const bool DEFAULT_PERMIT_REPLACEMENT = true;
/** Maximum number of headers to announce when relaying blocks with headers message.*/
static const unsigned int MAX_BLOCKS_TO_ANNOUNCE = 8;
@ -137,6 +139,7 @@ extern bool fCheckpointsEnabled;
extern size_t nCoinCacheUsage;
extern CFeeRate minRelayTxFee;
extern bool fAlerts;
extern bool fPermitReplacement;
/** Best header we've seen so far (used for getheaders queries' starting points). */
extern CBlockIndex *pindexBestHeader;